Wavelength shifters
نویسندگان
چکیده
منابع مشابه
A Method of Coating Photomultipliers with Wavelength Shifters
A simple procedure to coat photomultipliers with PTP wavelength shifter is described and results of some measurements are discussed. 1. Introduction The spectral sensitivity in the UV region of modem photomultipliers is normally limited by the transmission properties of the window material. The glass windows commonly used typically absorb light below a 300 nm wavelength. In many applications , ...
متن کاملThe Effect of Wavelength Shifters on Water Cherenkov Detectors
In recent years several experiments have been planned to measure the proton lifetime and, among those under construction, some detectors [ 1 3 ] use large amounts of water as a source of protons and Cherenkov light (CL) for detection of p-decay products. The dynamical interpretation of the events and the vertex reconstruction are the main problems in water Cherenkov detectors; these problems ca...
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A paper in this issue from the laboratory of Guilio Cossu (De Angelis et al., 1999) is of particular interest because it goes against the grain of what we think we know about two fundamental aspects of muscle biology: first, the embryonic origin of muscle cells; and, second, how damaged muscle repairs itself. Current models indicate that the nuclei in skeletal muscle myofibers originate from th...
متن کاملGuided resonance reflective phase shifters
We present reflective phase shifters based on high contrast gratings resting on a low-index spacer backed by a metallic mirror. The guided resonance of the grating combined with the reflection from the metallic mirror leads to an all-pass filter with 2π phase shift variation and unity reflectivity across the resonance. We present simulations, fabrication and measurement of passive devices fabri...
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A phase-steered microstrip antenna array is presented, suitable for application as a mobile vehicle satellite terminal. Phase shifters are implemented on a hybrid dielectric-ferrite substrate, and use is made of the phase transition near the cut-off region of the biased ferrite. Small permanent magnets and carefully biased ferrites remove the need for large applied electromagnetic fields. 2-, 3...
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ژورنال
عنوان ژورنال: Nature Biotechnology
سال: 2000
ISSN: 1087-0156,1546-1696
DOI: 10.1038/81073